Find a general term an for the arithmetic sequence.The first five terms of the sequence are 6.9, 7.4, 7.9, 8.4, 8.9.
A. an = 0.5n + 6.4
B. an = 0.4n + 6.4
C. an = 0.5n + 6.2
D. an = 0.5n + 6.9
Answer: A
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